Deformation Characteristics of Construction Joint of Paved Track on Earthwork Section using the Accelerated Track Test

궤도가속실험을 통한 포장궤도 토공구간 시공이음매부의 변형특성 연구

  • 이일화 (한국철도기술연구원 철도구조연구실) ;
  • 장승엽 (한국철도기술연구원 궤도차륜연구실) ;
  • 강윤석 (한국철도기술연구원 궤도차륜연구실) ;
  • 엄주환 (한국철도기술연구원 궤도차륜연구실) ;
  • 김은 (한국철도기술연구원 궤도차륜연구실)
  • Received : 2010.08.05
  • Accepted : 2010.10.04
  • Published : 2010.10.26

Abstract

The Paved Track is applied to reduce maintenance cost of conventional line. The Paved Track could be used in all types of lines including earthwork, bridge, tunnel and turnout sections. In case of earthwork section, the construction joint is the most critical factor to track durability. The construction joint does not affect to the track structure directly, but the gap due to discontinuity of slabs may affect to the long-term serviceability. To evaluate this problem, the accelerated track test has been performed on the construction joint and the middle part to of the real scale Paved Track. The purpose of this test is that evaluate the vulnerability of construction joint section comparing the trends of settlement and earth pressure under repeated loads of construction joint with those of the middle slab part.

포장궤도는 토공구간, 교량구간, 터널구간, 분기기구간 등 모든 구간에서 유지보수를 절감할 목적으로 적용한다. 토공구간에 포장궤도를 적용할 경우, 내구성에 가장 큰 영향을 미치는 것은 시공이음매부로서 구조적인 문제는 없으나 슬래브의 불연속으로 인한 단차가 발생하여 장기적인 사용성에 영향을 미칠 가능성이 있다. 따라서 이에 대한 검토를 위하여 실물의 포장궤도를 제작하여 시공이음매부와 연속부에서 가속실험을 실시하였다. 가속실험에서는 각 재하하중별 변위와 토압에 대한 경향을 비교함으로써 시공이음매부에서의 취약도를 평가하고자 하였다.

Keywords

References

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